Add ProjectStackInline to ProjectAdmin
Add ProjectStackInline to ProjectAdmin

ProjectAdmin now shows associated Stacks. Also renamed ProjectInline to
ProjectStackInline to better reflect the model name.

fzadow/CATMAID,htem/CATMAID,htem/CATMAID,htem/CATMAID,fzadow/CATMAID,htem/CATMAID,fzadow/CATMAID,fzadow/CATMAID